relieved but gutted at the same time..

hey all so I have a 3 month old baby boy and 4 y/o son. my immune system has been awful since giving birth constantly I'll or infections so I haven't really been out and seeing to baby I haven't really seen to myself.. I.e contraception so tried condoms as I didn't want to get pregnant but partner came up in rash and I became irritated. so we have been doing the pull out method with works for us as we have done it alot of the time as he is not a pre cummer. but we had the mistake of we was too into the zone twice where he cummed in me but it was to good to give a damn! So since then been paranoid I'm pregnant...I would love another baby as I won't stop until I am able to conceive a girl. But today I came on my period..I'm absolutely gutted. now I'm on maturnity leave so Im worried about my job because I'm due back in August but if I was to try again for a baby I may loose my job as I will have to to again so soon. my partner also works and would love another and he is not fussed on age gaps so I really am just worrying about my job