Don’t want to be pregnant

I’m 21 years old, I have an 8 month old daughter and my husband and I just found out I’m 8 weeks pregnant. I was on birth control and i honestly don’t want to have another baby. I struggled with PPD back in February to the point I was in a mental hospital for a few days and I just feel like the time is not right to have another baby, especially with my first born being so young. At the same time though I feel like a bad person for even feeling this way but it’s eating me alive I just don’t want two kids so young. I also just feel like i’m missing out on so much. I just turned 21 in April. My brother is getting married next July and I’m in the wedding it’s just so much going on.