Women can get clots, although they shouldn't, but it doesn't mean there's a miscarriage. The weakness is due to the blood loss, and there may be a thyroid problem contributing to this if you have a history of irregular cycles or any cramps or PMS symptoms. In addition to seeing your physician or nurse, I recommend the following, and find it VERY effective.

SEED ROTATION DIET for HORMONE BALANCE

'Want a quick and easy way to start balancing your hormones? Whether it's PMS or cramps or plain grumpiness, this simple addition to your day has been shown to help all of these! From day one of your period (the first day you bleed), take 2 TBSP of GROUND flax/chia/pumpkin seeds. Choose any seed you like, but be sure to grind them first. Flax seeds are conveniently sold ground already. Then, 2 weeks later (15 days from start of bleeding), switch to ground sunflower or sesame seeds. If your period is very irregular, you can use the moon cycle: day 1 of the month is the new moon. Then, on the full moon switch to sunflower/sesame seeds. The flax/chia/pumpkin seeds contain oils and compounds that support estrogen, and the other seeds support progesterone, right when we need it. Because this is very powerful, do not use this if you are using any kind of hormonal contraception. Do not use if you are allergic to any of these seeds.'