Pregnant again?

hello girls.

so my baby was born on November, she’s now 5 months.

on the 21st of march my partner and I had sex for the first time since she’s been born. we didn’t use a condom but he pulled out.

I then had my first period on the 1st of april until the 6th.

but now I feel scared that I’m pregnant again! I’m constantly peeing, craving sweets and having a lot of mood swings, and also been dealing with heartburn on and off (which I had a lot during my pregnancy).

also, yesterday and today I’ve been having just a bit of blood on my panties, which looks kinda like implantation bleeding.

is there any change I could be pregnant again? I don’t think I can handle two babies so close in age, nor do I have the financial capability!

please help!