need advice.

i've been under a LOT of stress lately and i feel as if all this stress is going to make me miscarry. i've been crying a lot (would rather not go into detail) and i've also been beating myself up (not physically but mentally). i'm currently having really bad cramps on my right side. i know i've asked this before but should i be worried? i don't have an appointment with a doctor for another 3 weeks. help!