"Regret" becoming a mother

I seriously need some help.... I wanted to be a mom so bad, my hubby and I tried for several years and finally succeeded. The first few weeks were rough only because we were new parents trying to figure things out. Our daughter was a very content baby. After that things settled down and we were doing fine, the last two weeks have been hell. All the sudden she's randomly spitting up her entire feeding every few days, she was constipated because she didn't want to drink anything for the rest of the day after one episode. We finally took her to the ER and they said she had thrush. We've been giving her medicine for that and she's doing better butt now she cries for no apparent rain. I love her to pieces but at the same time I regret becoming a mother. I feel horrible for saying that because I waited so long for her. Her aunt took her for a "sleepover" and then kept her the next day to give me a break and I missed her so I know I don't truly regret it. I'm just so lost and confused about my own emotions after delivery. (Which was also very difficult and I partially feel cheated because it was an emergency csection and then they put me on blood pressure medicine which dried up my milk supply) please don't hate, I need help. Does anyone have any advice or a shoulder to cry on?