Too much excitement

Today I cooked the majority of the food for dinner, as well as had an emotional talk with my older brother and chasing after kids. I am high risk due to my heart and other issues. Baby has been looking great, im 15 weeks. But now as im laying in bed I have so much extra discharge, lower pelvic cramps (like period cramps) and a severe back ache... Please tell me this is all normal? Should I worry? Ugh Im so stressed its not funny.