So sorry you are dealing with postpartum blood pressure issues, as if preeclampsia wasn't bad enough on it's own!
After my second baby, my blood pressure peaked a week post partum on a high dose of BP meds. I wasn't put on meds until after delivery, and over the next several weeks my blood pressure came down to a new baseline. Still a little high, so my doc reccomended I stay on a low dose of BP meds to lower my long term risks. Since then I have discovered that I'm salt sensitive. Plus my BP tends to be higher around my period. My GP said that it isn't uncommon for women to have slightly higher pressures during their periods, and even prescribed me a diuretic to use for those couple of days a month when my pressures were running a little higher due to hormones. I have noticed that if I'm careful about what I eat (nothing too salty/eating out) my BP doesn't go up as much even when I'm on my period.
My GP did say she wasn't worried if I had a couple diastolic readings in the low 90s, but higher than that my risks would go up long term due to hypertension. I also saw a cardiologist postpartum to get a second opinion, since I was still dealing with high BPs a couple months postpartum.
Were you on the depo shot before? I know some women have experienced side effects with hormonal birth control. You also might want to talk to your docs about whether a birth control shot is the best option for you, since some women with a history of preeclampsia have been told to avoid certain kinds of hormonal birth control since we may be at greater risk of stroke/heart attack (long term) than the general population.
My first couple postpartum periods were always heavy/different from normal. Also if you are breastfeeding that can impact hormones too. I've also had long heavy periods in the past due to hypothyroidism, so if your next couple of periods are still weird I'd talk to my OB & GP.
Hope this helps, good luck!
Hypothyroid mom to Connor and Claire
(severe pre-e at 38 weeks & "mild" pre-e at 37 weeks)
& baby Annabelle
(chronic HTN & GD, superimposed pre-e @34 weeks, induction @37 weeks)