Depo Shot

Been on depo for about 6 months now, getting my 3rd shot in 2 weeks and hopefully gonna change it to the implant the next time I go in for depo, anyway this is my second time bleeding while being on it. The first time lasted 4 weeks and today’s marks one week of having my period. The first time I started bleeding, nothing hurt me physically. It more spotting and i wasn’t cramping or hurting except for headaches. This time around, I’m having a full blown *light* period experiencing cramps, feeling bloated and feeling sore. The cramps were worse today than any other day this week and it sucks. I have been taking medication that helps with spotting called ‘Estradiol’ and it’s the pill. Could this medicine be causing me to feel this pain or since I haven’t gotten my period in about 2 months, could it just be my body trying to get rid of the blood? If it lasts for about another 2 days I am going to call my doctor about it