Based on the information provided, you are having issue of easy bruising and their are various causative factor and medical workup needs to be done for pinpointing the problem.
1) Various autoimmune disorders
2) Vitamin deficiencies,
3) Blood clotting issues,
4) Hereditary diseases
5) Blood disorders like leukemia
6) Liver diseases may lead to such a problem.
1) CONSULT hematologist
(blood doctor) / Internal medicine doctor
2) Various Blood test
needs to done to check vitamin deficiency
and blood clotting issues
3) Need to check issues with liver with ULTRASOUND
4) Autoimmune test may be needed.
REST ASSURE Their is no sexually transmitted disease
that normally cause the above mentioned problems but other underlying issues may lead to the condition you are facing
Hope it helps.
Dr. JAY PATEL