TTC after abortion

Right before people judge at the start of the year I found out I was pregnant I had a termination due to finding out my eldest 3 has a tumour so my head has been everywhere I work full time and my mum helps with childcare however she tried committing suicide so I thought given current circumstances it would not be fair so had the abortion (and that is just some of the reason) well since then all I feel is regret guilt ...I never wanted another it was only because I took my eye off the ball it happened and now it's all I can think of ....I want a baby .... Is that wrong ? Has anyone been through similar? Would it be safe to TTC